Issued Patents All Time
Showing 1–10 of 10 patents
| Patent # | Title | Co-Inventors | Date |
|---|---|---|---|
| 10214988 | Riserless abandonment operation using sealant and cement | David Duane BROWN, Jeffrey Thomas Watters, Jorge Esteban Leal, Larry Watters, Xiaoxu Li | 2019-02-26 |
| 7712530 | Pre-stressed annular sealant and method of creating a durable seal in a well bore annulus | Kevin D. Edgley, Larry Watters, Paul L. SONNIER | 2010-05-11 |
| 6345535 | Apparatus and method for estimating the compressive strength of foam cement | Voldi E. Maki, Jr. | 2002-02-12 |
| 6269684 | Dynamic fluid loss cell apparatus and method thereof | Voldi E. Maki, Jr. | 2001-08-07 |
| 5992223 | Acoustic method for determining the static gel strength of a cement slurry | Voldi E. Maki, Jr. | 1999-11-30 |
| 5339899 | Drilling fluid removal in primary well cementing | Kris Ravi | 1994-08-23 |
| 5327969 | Method of preventing gas migration during primary well cementing | David L. Sutton | 1994-07-12 |
| 4653313 | Positive stirring consistometer cup and method of using the same | David L. Sutton, Johnny W. Johnson | 1987-03-31 |
| 4524828 | Method of using thixotropic cements for combating gas migration problems | Jerry D. Childs | 1985-06-25 |
| 4515216 | Method of using thixotropic cements for combating lost circulation problems | Jerry D. Childs, Mary J. Taylor | 1985-05-07 |